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Atomic Transistors

Donghun Lee, Ohio State University (2011)

If you could look deep inside an infrared LED and had microscopic vision, you might see the image above, showing the microscopic image of the surface of gallium arsenide (GaAs) and how the arrangement of atoms on the GaAs surface affect its electric field. The image illustrates the manipulation of individual atoms to allow for very precise tuning of the characteristics of GaAs-based transistors.